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Old 01-20-2020, 12:19 PM
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N729LS N729LS is offline
Join Date: Apr 2015
Location: Mesa, AZ
Posts: 159
Default Better DynaVibe Results

I have to take exception to saying that some planes cannot be brought to better than 0.1 IPS RMS using a DynaVibe. I used to use an ACES system for balancing, but was gifted a low-end DynaVibe unit.

The basic differences between the cheaper and more expensive DynaVibe units, or the ACES unit, are the balancing software and the convenient memory. Fortunately (?) I am a mechanical engineer, so I wrote my own software in Excel to support the balancing process using the cheaper unit.

Anyway, I guarantee a final value of 0.07 IPS or better, but for most RV's I can get into the 0.03 range! Heck, I've even gotten CJ-6s down to that! And - (Blatant Commercialism Warning) - I offer a discount to EAA members that can come to KFFZ for the balance.

Andy Elliott
Andy Elliott, CFI, RV-8, N303RV
Flight Reviews, Dynamic Prop Balancing
KFFZ, Mesa, AZ
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Old 01-20-2020, 01:42 PM
JDA_BTR JDA_BTR is online now
Join Date: Dec 2013
Location: Baton Rouge, LA
Posts: 948

When a magnitude made sense I made that assumption. The math works well overall. Itís not a recent paper but the theory is sound.

I didnít say you cant get to less that 0.1 with a dynavibe. Iím at 0.03. With any instrument accuracy at low amplitude is reduced. It just is a little more trial and error at low amplitude in my experience.
Ser 104142, RV-14A flying - N1463
Ser 83825, RV-8 building - N8638?
USN Ret, Urologist, AME, Repeat Offender
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Old 01-20-2020, 05:29 PM
Kuhtenia Kuhtenia is offline
Join Date: Jan 2018
Location: Galena, Ohio
Posts: 22
Default DynaVibe-Related Podcast

The crew over at Sonex Flight podcast just posted a new episode specifically related to use of the DynaVibe, including common issues, a long chat with the factory rep, etc.

Definitely recommend a listen -
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